Trolley-pole head.



PATENTED MAY '24, 1904.

LE. GREENWOOD. TROLLBY POLE H'EA'D. APPLICATION FILED SEPT. 25, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

WITNE$$E S aw, 01w.

m: Nonmayngns cc PHOYCLLlTHOu WASHINGTON, n c.

Patented my 24, I904.- 1

' abundance of current andjto insure the pas- 7 line-wire.

citizen of the United States, residing at Utica,

1 have invented certain new and useful Improvefreedom of the harpsandthe wheelssupportor wheels over switches, crossovers, or breaks suchdifferences in direction between the car TROLLEY -POLE'HEAD;

SPECIFICATION forming part of LettersPatent No. 760,736, dated Me '24,1904. i

' A lication filed September 25,1903.

To all whom it may concern..- I Be itknown'thatI, JOHN E. GREENWOOD, a

in the county of Oneida and State of New York,

inents in Trolley-Pole Heads, of which the following is a specification,ireference being had therein to the accompanyingdrawings.

My invention relates to improvements in trolley-pole heads for railwaysreceiving their motive current .from. a wire, and more especiallyto'thatclass of heads wherein is employeda plurality of wheels or collecto'rs.1 Among the objects of my invention is to provide an improvement in themethod of mounting the trolley-wheels'upon the trolley-pole or othersupport so as to permit the greatest ed therebyiand the mountingsof theharps and other supporting me a'ns, which is accom plished in sucha'wayin't'he invention I now" disclose. as tofcomp'ensatejfor anyinequalities; or unevenness in the trolley-wire and forl any" vibrationof the wire or car and its parts. j I also secure the safe passingof'the collectors] in the continuity ot the wire; f It is further ofadvantage in its capacity to easily supply:-

sage of the current should one i of the colle'cl tors or wheels forany'reason become displaced or inoperative. or fail to make contact withthe One ot the particular advantages of my'device is that it enables thecollectors to keep the wire, even thoughthe car is on a sharp curve,where the body of the car and the trolley-pole will take an'angle to theline-wire before the collectors or wheels have reached the curve.- 3

The 'construction of my device allows for and pole and the direction ofthe wire on which the wheels travel, sothat no changes in direction bythe car will have a tendency to run view of the device.

' viewsofthe .harps. j

' are .well known in the art, by 'w'h Serial No. 174,539. (No modemconfine myself to the particulars there shown,

as they are intended merely for the purpose of showing the applicationof my invention.

. I Figure 1 of the drawings is a side elevation of mydevice. and 4 areviewsof collars employed in mount- Fig. 2 isa top view. Figs. 3

ing my improved device; and Figs. 5 and 6 are views of theharp-bolt,one. being a side and the other'a frontview, Fig. 7 isa rear Fig. 8 is aview of one of the wheelrha r p's, while Figs. 9 and 10 are topReferring to the figuresmore in, detail, 1

represents a trolley-pole, which provided 1 at its free end witharecess1, in which is secured the bolt' 2 by the insertionof its fiat-;tened'hea'dQ between theshoulders'l", provided ,at the'endof pole'l,inwhich position it secured. by bolt 3, passing through transverseopeningsin the end of pole I and the 'head of bolt 2. It will beunder-steed, that the'trolley pole is providedwith means which hitsupper endfli's' heldupwardlyto nor malntain the collectors in contactwithtl olley-wire This bolt 3 has an enlarged an ,-extendedhead,as':shown at 3fin Fig.1 7, a'ndon which 3 is seated spring 4:, oneend of which is secured to slotted lug 4' on polel or' byother suitablemeans, and the other end of which is secured in an aperture in a collar5, supported on boltj2, which is provided with shoulders 2' for thesupport of such collar, and in which position the collar is held by apin 5 passing through collar. 5 and bolt 2.

' On the bolt 2 and supported bythe collar 5 are the wheel-harps 6,which areshownasgether to slip down on the bolt 2. Above these ends ofthe harps is secured collar 7 by 10 10 show the trolley-wheels, whichare-of a suitable form and'construction and are sup- '95 means of pin 7*passing through it and bolt ported in the harps by journals 11 11 andpins 11 11. The harps are extended farther outwardly, as shown by partswhere the two sides are united and from which point strap By the partsthus far shown I have pro' vided for the support of the harps with thewheels in contact with thewire, the harps being supported on bolt 2,which by means of spring 4: is held in substantially vertical positionon the end of pole 1, but with a certain amount of play to and frolongitudinally with the line-wire, which is shown by X.

In order to provide for the lateral play of the harps and still givethem a normal position in alinement with the wire and" pole, I provide aspring connection between bolt 2 and each of the harps 6. One of theharps is held by spring 13, which is seated on bolt 2 between the head 2and the shoulder 2", and one end of which is confined in slot 2 in thehead of bolt 2 and the other end of which is confined in slotted lug 6,which is secured on the harp near its mounting on bolt 2.

The spring 14, which controls the other harp,

is -seated on the collar 7, one end of it being secured in a slotted lug14 on the shank of,

the other harp, and the other end of the spring is secured in a socketin the upper end of bolt 2. The bolt 2 is capped with collar 15, securedby pin 15. Since the harps are mounted to turn on their bearing on bolt2, each harp 'is free to turn on the bolt 2, notwithstanding thedifference in direction which may be taken by theear and the pole. Thespring connection jbetween'the bolt and the harp tends to bring eachharp into alinement with the polewhen the latter is in alinement withthe wire and in this respect limiting the horizontal movement of theharps, It will thus be seen that I have provided a plurality of contactmeans with the wire such that the harps are free to move up or down to alimited extent and independently to move laterally to a limited extent,being always brought to their normal position of alinement with the carand with the wire by the springs con nected to the several parts, asshown.

It will of course be understood that the parts shown are of propermaterial to furnish means for conducting a current from the wire to themotor of a car;

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is

1. In a device of the character described, a trolley-pole, a bolt soseated therein as to permit movement of the latter in a vertical plane,current-collectors so mounted on the bolt as to permit horizontalmovement of each collector independently, means for maintaining a normalvertical position of the bolt and a normal position of the collectors inalinement with the trolleypole, in combination substantially asdescribed.

2. In adevice of the character described, the combination with atrolley-pole having a harp mounted thereon of a' head-bolt mounted onthe pole to have a limited movement in a vertical plane, wheel-harpsmounted on the headbolt to have a horizontal movement andtrolley-wheels, journaled in the harps, substantially as described.

3. The combination with a trolley-pole having a forked end of ahead-bolt mounted thereon by means of a transverse bolt to have amovement in a vertical plane, means to limit the vertical movement andretain the head in normal position, harps mounted on the headbolt tohave horizontal movements, trolleywheels journaled in the harps,substantially as described.

4. The combination with a trolley-pole of a head-bolt pivotallyconnected to have a movement in avertical plane, means connecting thepole and head-bolt to limit the movement of the latter, wheel-harpsmounted on the headbolt to have independent horizontal movement, meansto limit the movement and return the harps in longitudinal alinementwith the trolley-pole, trolley-wheels journaled in the harps,substantially as described.

5. The combination with a trolley-pole having a forked end of ahead-bolt mounted thereon by means of a transverse bolt to have amovement in a vertical plane, spring means connecting the trolley-poleand the head-bolt, and regulating the vertical movement of the latter,wheel-harps mounted on the head-bolt for independent horizontalmovement, spring means connecting the head-bolt and each harp,regulating the movement of each harp, means to retain the spring meansin place and trolley-wheels journaled in the harp, substantially asdescribed.

6. The combination with a trolley-pole of a head-bolt provided withharps mounted thereon, wheels journaled in the harps and means forretaining the wheels thereon, said means comprising a journal for eachtrolley-wheel, and a strap between the flares of the trolley-wheel,substantially as described.

7. The combination in a trolley-pole, of a head-bolt pivotally connectedto have a movement in a vertical plane, means connecting the pole andhead-bolt to limit the movement of the latter, wheel-harps mounted tohave independent horizontal movement on the headbolt, means to limitsaid movement, collectors mounted in theharps and means provided forretaining said collectors, said means compris- ITO ing a strap mountedon the harp and extending below'the collector's, substantiallyzasdescribed. 8. The combination with a trolley-pole having a forkedend,"of a head-bolt mounted there- I on'to have limited movement in avertical plane, means limiting said movement and re-' tainingthehead-bolt in a normal vertical position, harps mounted on thehead-bolt to have horizontal movements, trolley -'wheels 'jour naled inthe harps, substantially as described.

9, In a device of the character described, ,v

the combination of a trolley} pole provided with means to hold the sameupwardly, [current collecting means supported thereon, 5 means formaintaining said collecting means in normel alinement with thetrolley-Wire and permitting a limited horizontal movement of eachandalimitedvertical movement of the series of said collecting means,substantially as 20

